Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Mobile, AL

July 11, 2021Okaloosa County, Florida

NWS Mobile, AL issued this special weather statement at Jul 11, 2021, 5:46 PM CDT for Okaloosa County, Florida. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 11, 2021, 5:46 PM CDT (22:46 UTC)
Expired
Jul 11, 2021, 6:30 PM CDT
In force
44 min
Issued by
NWS Mobile, AL

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 94 km from the middle of the area, began a volume at 22:48 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.8 hours before the alert went out and 250 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 12:00Z on 2021-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 888 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2021-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
888 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
866 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
-40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

703 
WWUS84 KMOB 112246
SPSMOB

Special Weather Statement
National Weather Service Mobile AL
546 PM CDT Sun Jul 11 2021
 
FLZ203>205-112330-
Okaloosa Inland FL-Santa Rosa Coastal FL-Santa Rosa Inland FL-
546 PM CDT Sun Jul 11 2021

...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHWESTERN OKALOOSA AND EAST CENTRAL SANTA ROSA COUNTIES UNTIL 630
PM CDT...

At 545 PM CDT, the strong thunderstorm was located 6 miles southeast
of Roeville, or 8 miles east of Bagdad, moving east at 20 mph.

Wind gusts in excess of 30 mph will be possible with this storm.

Locations impacted include...
Baker and Roeville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3065 8700 3065 8699 3066 8700 3069 8701
      3082 8662 3052 8659 3052 8696
TIME...MOT...LOC 2245Z 257DEG 16KT 3064 8689 

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 11, 9:40 AM CDTSpecial Weather StatementMOBMobile50 min
Jul 11, 11:10 AM CDTSpecial Weather StatementMOBConecuh, Escambia50 min
Jul 11, 11:46 AM CDTSpecial Weather StatementMOBMobile29 min
Jul 11, 12:05 PM CDTSpecial Weather StatementMOBConecuh, Monroe40 min
Jul 11, 1:34 PM CDTSpecial Weather StatementMOBChoctaw, Clarke, Washington41 min
Jul 11, 1:50 PM CDTSpecial Weather StatementMOBMobile25 min
Jul 11, 2:29 PM CDTSpecial Weather StatementMOBBaldwin, Mobile46 min
Jul 11, 3:27 PM CDTAreal Flood AdvisoryMOBClarke, Washington3 hr
Jul 11, 3:53 PM CDTSpecial Weather StatementMOBConecuh52 min
Jul 11, 4:38 PM CDTAreal Flood AdvisoryMOBBaldwin, Clarke, Conecuh, Escambia, Monroe3 hr
Jul 11, 4:59 PM CDTSpecial Marine WarningMOB61 min
Jul 11, 12:19 PM CDTSpecial Weather StatementMOBSanta Rosa41 min
Jul 11, 1:24 PM CDTSpecial Weather StatementMOBOkaloosa36 min
Jul 11, 4:56 PM CDTSpecial Weather StatementMOBSanta Rosa49 min
Jul 11, 5:09 PM CDTSpecial Weather StatementMOBEscambia51 min
Jul 11, 5:21 PM CDTAreal Flood AdvisoryMOBEscambia, Santa Rosa3 hr
Jul 11, 12:49 PM CDTSpecial Weather StatementMOBGeorge41 min
Jul 11, 12:59 PM CDTSpecial Weather StatementMOBWayne46 min
Jul 11, 1:37 PM CDTSpecial Weather StatementMOBGreene, Perry38 min
Jul 11, 2:09 PM CDTAreal Flood AdvisoryMOBGreene, Perry, Wayne3 hr
Jul 11, 2:56 PM CDTSpecial Weather StatementMOBStone49 min
Jul 11, 3:45 PM CDTSpecial Weather StatementMOBGeorge, Stone45 min

Nearby

Special Weather Statements in Florida, 2021Every special weather statement in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.